Compile errors when calling NRFX_UARTE_INSTANCE

[moose]

I am trying to develop a simple uart driver based on the nrfx_uarte driver but I get compiling errors (see below).

All I have is a simple uartOpen() function for now that is supposed to initiate the nrfx_uarte driver. I know the error source is the "NRFX_UARTE_INSTANCE(NRFX_UARTE0_INST_IDX)" call because if I comment it out the project build fine but I don't know why. I made sure that the UART/UARTE drivers are added/enabled in the std_config.h. I attached the file for your reference. Any help you can provide would be really useful bc this whole business with different examples having different std_config.h and the legacy driver / nrfx makes the setup a bit confusing. Thanks!

#include "uart.h"
#include "nrfx_uarte.h"
#include "nordic_common.h"
#include "sdk_errors.h"

bool uartOpen(void)
{
  nrfx_uarte_t * const uartInst = NRFX_UARTE_INSTANCE(NRFX_UARTE0_INST_IDX);
  nrfx_uarte_config_t config = NRFX_UARTE_DEFAULT_CONFIG;
  uint32_t err_code = nrfx_uarte_init(uartInst, &config, NULL);

  return true;
}

 sdk_config.h

[Håkon Alseth]

Hi,

 

If you have a look at sdk_v16/examples/peripheral/uart, it uses the nrfx_uarte driver.

uartInst shouldn't be a pointer. Could you try declaring it as a variable, and see if this works better?

As the instance is passed as an input to other calls, like nrfx_uarte_tx, you'd probably want this as a global.

 

Kind regards,

Håkon